Editing Macintosh Quadra 800 (section)

== Memory and Storage ==

=== RAM Configuration ===

The Quadra 800 has 8 MB of RAM soldered to the logic board. Four 72-pin SIMM slots accept 60 ns SIMMs, allowing expansion to a maximum of 136 MB. The slots can be filled individually but should ideally be populated in interleaved pairs for optimal performance. Compatible SIMM sizes include 4 MB, 8 MB, 16 MB, and 32 MB modules.<ref>{{cite web |url=https://everymac.com/systems/apple/mac_quadra/specs/mac_quadra_800.html |title=Macintosh Quadra 800 Specs |publisher=EveryMac.com |access-date=2026-02-10}}</ref>

=== ROM and System Software ===

The system contains 1 MB of ROM. The Quadra 800 requires System 7.1 with System Enabler 040 v1.0 or later. The highest supported version is Mac OS 8.1. With a PowerPC upgrade card installed, the system can run Mac OS 9.1 or A/UX.<ref>{{cite web |url=https://lowendmac.com/1993/quadra-800/ |title=Quadra 800 |publisher=Low End Mac |access-date=2026-02-10}}</ref>

=== Storage Systems ===

Standard configurations include a 230 MB or 500 MB internal SCSI hard drive and a 1.44 MB auto-inject floppy drive. Higher-end configurations include an AppleCD 300i 2x CD-ROM drive. The internal SCSI bus is faster than earlier Quadra models. A DB-25 SCSI connector on the rear panel provides external SCSI connectivity.